Carbon dating news articles
Schweitzer answered the challenge by testing with antibodies.
Her report in 2009 confirmed the presence of collagen and other proteins that bacteria do not make.
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High blood pressure is a huge problem in the United States and affects nearly 30% of adults aged 18 and over.
The fluctuation of the amount of C-14 in the atmosphere over time adds a small uncertainty, but contamination by "modern carbon" such as decayed organic matter from soils poses a greater possibility for error. Thomas Seiler, a physicist from Germany, gave the presentation in Singapore.
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